80840577 has 4 divisors (see below), whose sum is σ = 107787440. Its totient is φ = 53893716.

The previous prime is 80840567. The next prime is 80840579. The reversal of 80840577 is 77504808.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 80840577 - 2¹⁰ = 80839553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80840579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13473427 + ... + 13473432.

It is an arithmetic number, because the mean of its divisors is an integer number (26946860).

Almost surely, 2^80840577 is an apocalyptic number.

It is an amenable number.

80840577 is a deficient number, since it is larger than the sum of its proper divisors (26946863).

80840577 is a wasteful number, since it uses less digits than its factorization.

80840577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26946862.

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 80840577 is about 8991.1388044007. The cubic root of 80840577 is about 432.3908232339.

The spelling of 80840577 in words is "eighty million, eight hundred forty thousand, five hundred seventy-seven".